Test 2 Axilla/Special Spaces

Question 0

Base of Axilla

Answer 0

Concave skin, subcutaneous tissue, and axillary fascia extending from the arm to the thoracic wall forming the axillary fossa(armpit)

Question 1

Apex of axilla

Answer 1

Cervico-axillary canal, passageway b/w the neck and axilla. Bounded by the first rib clavicle and superior edge of the scapula

Question 2

Anterior wall of axilla

Answer 2

Pectoralis major and minor and the pectoral and clavipectoral fascia associated with them.
The anterior axillary fold is the most inferior part of the anterior wall

Question 3

Posterior wall of axilla

Answer 3

Scapula and subscapularis on anterior suface
Teres major and latissimus doris on inferior surface
Posterior axillary fold is most inferior part that may be grasped

Question 4

Medial wall of axilla

Answer 4

Thoracic wall and overlying serratus anterior

Question 5

Lateral wall of axilla

Answer 5

Intertubercle sulcus of humerus

Question 6

Axilla

Answer 6

Pyramidal space inferior to the glenohumeral joint and superior to the skin and axillary fascia at the junction of the arm and thorax

Question 7

Borders of Quadrangular Space

Answer 7

Above: Teres Minor
Below: Teres Major
Medially: Long head triceps brachii
Laterally: Surgical neck of humerus

Question 8

Contents of Axilla

Answer 8

Axillary Artery and its branches
Axillary Vein and its tributaries
Nerves of cords and branches of brachial plexus
Lymphatic vessels
Several groups of axillary lymph nodes, all embedded in axillary fat

Proximally, neurovasculaar structures are ensheathed in a sleeve-like extension of cervical prevertebral fascia, the axillary sheath

Question 9

Contents of Cubital Fossa

Answer 9

Brachial Artery
Biceps tendon
Median Nerve
Radial Nerve
Median cubital vein 
Medial and lateral cutaneous nerves - in subcutaneous tissue overlying cubital fossa

Question 10

Triangular Space Boundaries

Answer 10

Teres Major
Teres Minor
Long head triceps brachii

Question 11

Triangular Space Contents

Answer 11

Circumflex Scapular Artery

Question 12

Triceps Hiatus Boundaries

Answer 12

Teres Major
Long head triceps
Humerus

Question 13

Triceps Hiatus Contents

Answer 13

Deep artery of arm

Radial Nerve

Question 14

Clavipectoral (Deltopectoral) Triangle Boundaries

Answer 14

Clavicle
Deltoid
Clavicular head of pec major

Question 15

Clavipectoral Triangle Contents

Answer 15

Cephalic Vein

Question 16

Snuff Box Boundaries

Answer 16

Floor: Radial Artery, Scaphoid, Trapezium
Extensor Pollicis Longus
Extensor Pollicis Brevis
Superficial Radial Nerve (sensory only)

Question 17

Contents of Quadrangular Space

Answer 17

Posterior Circumflex Humeral Artery

Axillary Nerve

Question 18

Boundaries of Cubital Fossa

Answer 18

Superiorly: Imaginary line from medial to lateral epicondyles
Medially: pronator teres
Laterally: brachioradialis
Floor: brachialis and supinator
Roof: brachial and antebrachial fascia